Dip-stick test or 'Schroeder test' in genital TB refers to:
- A Culture of menstrual blood on Löwenstein-Jensen medium
- B ADA level measurement in peritoneal aspirate
- C Histopathological finding of epithelioid granulomas without caseation in endometrial curettings taken in the pre-menstrual phase ✓
- D Tuberculin test reactivity indicating prior sensitisation
Correct answer: C. Histopathological finding of epithelioid granulomas without caseation in endometrial curettings taken in the pre-menstrual phase
Explanation
The diagnostic gold standard for endometrial TB is histopathology of an endometrial sample taken in the late secretory (premenstrual) phase, which maximises gland density and increases the chance of finding tuberculoid granulomas. Finding of epithelioid granulomas with or without caseation confirms the diagnosis. Culture of menstrual blood on Löwenstein-Jensen medium is another method but takes 6–8 weeks. ADA elevation in peritoneal fluid supports peritoneal TB. The tuberculin test indicates exposure, not active genital TB.
Reference: Shaw's Textbook of Gynaecology, 17th ed.
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